Does anyone know if the 2k-2k1 y pipe which I believe all have 4 o2 sensor since they're Cali speced if that'll fit a 99 Cali Speced with 4 o2 Sensors. I'm looking at the diagrams from Nissan and the parts have the same No# but I'm not sure if it'll fit. Any help with this would be great.
Thanks

 

a 2k-2k1 pipe wont fit on a CA Spec '99 you'll need to go to Cattman I think they are the only ones who make a CA spec pipe (Stillen?)